Does anyone have experience with connecting Model
EZ135A SyQuest drives
(that read 135MB removeable cartridges) to PCs? I think they were
originally sold as external SCSI or parallel port devices. The bare drive
that I've got has an IDE type interface, but I'm told they don't identify
themselves properly on the IDE bus so that the PC BIOS doesn't recognise
them. (I'm trying to find a way to read some old archive disks).
I have a few EZ135 drives kicking around here - Two parallel ones that I
can find, and an IDE one that I can't at the moment - so I can't verify
that it exactly the same model as you mentioned, but it probably is.
The IDE drive is a true IDE drive, and you can talk to it without special
drivers - I used to use one as a boot drive at one point. There are a couple
of caveats however:
1) IIRC the drive does not detect/report itself correctly, and you need to
set up a manual drive type. According to the manual (which I did find),
the settings are:
Heads: 16
Cylinders: 512
Sectors/Track: 32
Write Precomp: 0
Landing Zone: 0
(Obviously these don't match the physical layout!)
2) You can't remove the cartridge without the EZ135 drivers - otherwise it
is not known as a removable device. So make sure the disk is inserted at
boot time and remains in the drive until you shutdown.
In case you want them, I have placed ImageDisk images of the EZ135 IDE
install disks (I found those too!) at:
www.dunfield.com/pub/index.htm
Regards,
Dave
--
dave06a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools:
www.dunfield.com
com Collector of vintage computing equipment:
http://www.classiccmp.org/dunfield/index.html